After I 3x click to open DCH, I sometimes will tighten the search by adding a scripture tag. I.e. פרד at Dt. 32.8; and I add the secondary search of 'dt'; the search fails to find the reference. However 'ps' and 'gn' and others will work. But 'dt' does not.

This is a known issue that we're working on correcting. We have also added page numbers, and corrected many other minor issues. A free update will be available, hopefully, within a couple weeks. Apologies for the issues.